truck studders and smokes after WOT?? - Ford Powerstroke Diesel Forum
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Old 04-29-2010, 08:55 AM

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truck studders and smokes after WOT??

2005 f250 6.0l just out of warranty by two days!!!!

programmer is currently off the truck and running stock tune...everything else in my sig is still on it

ok so as the title 05 drives fine until full boost or wide open throttle...example i was driving up the on ramp and wot first second and third gear.....i come to the top of the ramp and coast into traffic....when i slowly get back into the throttle to maintain my 60mph....the truck shakes and studders/ boost, no turbo spool TONS of black and white smoke out the i understand unburnt fuel on WOT....but ten seconds later on a stock tune??? Next i proceeded to stick the truck in neutral and floor it to clear all the unburnt fuel and respool the turbo....from then on the truck drives great.....till you cut it off and restart the drive cycle.....but like i said it only happens AFTER WOT and it doesn't matter cold or hot.....NO lights nothing....just puffs smoke....any ideas?? anyone else have this issue...? turbo is six months old and three new injectors.....thanks for any help i really need it.
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Old 04-30-2010, 02:19 PM

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Sounds like a injector, or possibly the FCIM. That is from my limited experience and knowledge. You will probably hear from somebody on here with more knowledge that can give you a for sure!
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Old 05-01-2010, 08:10 PM
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Have you checked the VGT Solenoid? If it decided to stick one way or another, the turbo wont spool. Also check the wiring harness to it. Any other potentially unrelated things you've noticed? Any codes that don't trigger a CEL?
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